Science 4th, unit 7

Science 4th, unit 7

Feb, 2014

Science 4th grade

UNIT 7

ENERGY AND THE ENVIRONMENT

J. Cesar Brazo Mur

El Tomillar, J.C. Brazo

1

Science 4th, unit 7

Feb, 2014

ENERGY has always existed

We can find energy all around us

El Tomillar, J.C. Brazo

2

Science 4th, unit 7

Feb, 2014

ENERGY cannot be created or destroyed.

It can only be TRANSFORMED INTO OTHER TYPES OF ENERGY Examples Electrical energy

Chemical energy

Sound energy or light

Heat and motion

El Tomillar, J.C. Brazo

3

Science 4th, unit 7

Renewable no yes Main ones

Feb, 2014

SOURCES OF Non-renewable ENERGY Do they pollute? yes Can be replaced?

no Main ones

Solar energy

Nuclear energy

Hydropower

Fossil fuels

Wind energy Geothermal energy

- Coal - Oil - Natural gas

Biomass

El Tomillar, J.C. Brazo

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